When she was pregnant with North, she had pre-eclampsia, a complication characterized by high blood pressure. And in both pregnancies, she had placenta accreta, which occurs when the placenta attaches too deeply in the uterine wall. Kardashian West has since been open about her willingness to conceive via surrogate.

Last season on the show, Kardashian-West said, "I want my kids to have siblings, but the doctors don't feel like it's safe for me."